CN107691472A - A kind of plant growth regulator for improving rice assimilation quotient transport efficacy and its application - Google Patents
A kind of plant growth regulator for improving rice assimilation quotient transport efficacy and its application Download PDFInfo
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- CN107691472A CN107691472A CN201711072979.3A CN201711072979A CN107691472A CN 107691472 A CN107691472 A CN 107691472A CN 201711072979 A CN201711072979 A CN 201711072979A CN 107691472 A CN107691472 A CN 107691472A
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 59
- 235000009566 rice Nutrition 0.000 title claims abstract description 59
- 239000005648 plant growth regulator Substances 0.000 title claims abstract description 30
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 62
- 239000004480 active ingredient Substances 0.000 claims abstract description 9
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009472 formulation Methods 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims description 2
- 239000003630 growth substance Substances 0.000 claims description 2
- 235000013339 cereals Nutrition 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 102000004190 Enzymes Human genes 0.000 abstract description 3
- 108090000790 Enzymes Proteins 0.000 abstract description 3
- 229920002472 Starch Polymers 0.000 abstract description 2
- 235000019698 starch Nutrition 0.000 abstract description 2
- 239000008107 starch Substances 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 44
- 235000011164 potassium chloride Nutrition 0.000 description 9
- 239000001103 potassium chloride Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000013329 compounding Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000009395 breeding Methods 0.000 description 4
- 230000001488 breeding effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 150000001722 carbon compounds Chemical class 0.000 description 3
- 230000029553 photosynthesis Effects 0.000 description 3
- 238000010672 photosynthesis Methods 0.000 description 3
- 230000008635 plant growth Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000857 drug effect Effects 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000546 pharmaceutical excipient Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000375 suspending agent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000184734 Pyrus japonica Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009355 double cropping Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/08—Alkali metal chlorides; Alkaline earth metal chlorides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/10—Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a kind of plant growth regulator for improving rice assimilation quotient transport efficacy, its active ingredient is NAA and KCL, and both weight proportions are NAA：KCL=1.86:1800 4500, preferably 1.86:2000 4200, more preferably 1.86:4000；Present invention also offers the application of above-mentioned plant growth regulator, and mainly for low temperature and less sunshine weather, 20 30d are sprayed to improve rice assimilation quotient transport efficacy after Rice Flowering.The present invention is compounded using the NAA and KCL of proper ratio, under low temperature and less sunshine weather, the Grain Filling of Rice middle and later periods uses, although the generation of rice assimilation quotient can not be increased substantially, it can prevent kernel grouting key enzyme activity from declining, kernel grouting can be promoted, and stem sheath assimilation quotient is promoted to be transported to fringe portion seed, the transformation efficiency of assimilation quotient is improved, the assimilation quotient of abundance is provided for the synthesis of seed starch, can effectively mitigate the injury that low temperature and less sunshine produces to rice yield and rice matter.
Description
Technical field
The present invention relates to plant growth regulator field, and rice assimilation quotient transport efficacy (water is improved more particularly to one kind
The ratio that assimilation quotient product is transported to fringe portion in rice stem sheath) plant growth regulator and its application.
Background technology
The species of current plant growth regulator is various, and specific aim is also different, most products mainly for water seeding stage, open
Florescence and kernel grouting initial stage, it is intended to improve Seed-Setting Percentage in Rice and mass of 1000 kernel so as to reach and improve the purpose of yield, or improve
The resistance of rice plant such as high temperature and low temperature stress.However, it is directed to this disaster day of Grain Filling of Rice phase low temperature and less sunshine
The product that gas is researched and developed is less.Wherein low temperature and less sunshine refers to cloudy weather, and optical illumination is inadequate and temperature is relatively low.
China middle and lower reach of Yangtze River rice region, after late September, temperature is gradually reduced, and rainwater increases, low temperature and less sunshine weather frequency
Numerous generation.At the same time, breeding time shorter rice varieties are in the kernel grouting middle and later periods, and the indica-japonica hybrid that breeding time is longer
Kind is then in the kernel grouting prometaphase.Low temperature and less sunshine weather influences less on breeding time shorter Yield of Rice Varieties, but can lead
Cause rice qualitative change bad.For the Indica×Japonica kind that breeding time is longer, if more than 7-10d low temperature and less sunshine weather, rice occurs
The formation of yield and quality will be serious suppressed, and the potentiality of high yield and high quality are difficult to play, specifically, low temperature and less sunshine weather its mainly endanger
Evil is photosynthesis complete inhibition, and kernel grouting key enzyme activity is remarkably decreased, and the transhipment of stem sheath assimilation quotient is obstructed, and is seriously affected
The formation of yield and rice matter, this causes the waste of resource to a certain extent, while also influences whether China's grain security.According to note
Carry, to mid-October at the bottom of middle and lower reach of Yangtze River rice region late September, substantially there is the low temperature and less sunshine weather of 10 days or so；Late October
To late November, have 20 days or so and be in rainy weather, temperature is extremely low.By taking big fringe super hybridization rice river in Zhejiang Province excellent 12 as an example, this type rice
Variety yield is very high, and correspondingly its pustulation period is also very long, generally 60d or so, and heading period is later.In consideration of it,
Its most of the time pustulation period is under low temperature and less sunshine weather.In addition, double cropping late rice heading period, than later, majority is in September 15
Day or so, and because for temperature than relatively low, kernel grouting is slower after late September, therefore the pustulation period is grown, so as to cause kernel grouting
Middle and later periods meets with low temperature and less sunshine weather.
Therefore, how to found it is a kind of for low temperature and less sunshine weather, the plant of rice assimilation quotient transport efficacy can be improved
Growth regulator, turn into the target that current industry need to improve.
The content of the invention
The technical problem to be solved in the present invention is to provide it is a kind of for low temperature and less sunshine weather, rice assimilation quotient can be improved turn
Transport the plant growth regulator of efficiency.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of plant growth regulator for improving rice assimilation quotient transport efficacy, active ingredient is NAA (auximone)
With KCL (potassium chloride), both weight proportions are NAA：KCL=1.86:1800-4500；It is further preferred that both weight proportions
For NAA：KCL=1.86:2000-4200；It is further preferred that both weight proportions are NAA：KCL=1.86:4000.
In the above-mentioned plant growth regulator of the present invention, in addition to active ingredient NAA and KCL, plant growth can also be included
Receptible auxiliary agent composition in conditioning agent, as may include not produce chemical action with NAA and KCL or will not be to the present invention
Drug effect plays the component adversely affected, such as conventional use of dispersant, defoamer, excipient.
According to different use demands, plant growth regulator of the invention can be made into corresponding aqua, suspending agent, wettable
Property pulvis etc. be adapted to the formulation that agriculturally uses.
Preferably, the plant growth regulator is aqua, and wherein NAA concentration is 1.86mg/L, and KCL concentration is 1.8g/
L-4.5g/L；It is further preferred that the NAA concentration is 1.86mg/L, the KCL concentration is 2g/L-4.2g/L；It is further excellent
Selection of land, the NAA concentration are 1.86mg/L, and the KCL concentration is 4g/L.
The above-mentioned plant growth regulator of the present invention, can be made corresponding preparations product by above-mentioned weight proportion or concentration；
When can also apply：Apply, be administered simultaneously or apply successively after above-mentioned active ingredient is mixed by above-mentioned weight proportion again.
, specifically, can be under low temperature and less sunshine weather present invention also offers the application of above-mentioned plant growth regulator, water
Rice Post flowering 20-30d (corresponding rice milking stage middle and later periods) is sprayed to improve rice assimilation quotient transport efficacy.
Preferably, after the NAA and KCL are re-dubbed plant growth regulator, NAA spraying concentration is 1.86mg/L, KCL
Spraying concentration be 1.8g/L-4.5g/L, every mu of dosage is 30-35L.
Preferably, NAA spraying concentration is 1.86mg/L, and the spraying concentration of the KCL is 4g/L.
Grain Filling low temperature and less sunshine weather will significantly affect the transhipment of rice assimilation quotient, cause yield and quality decline, and
The result that the present invention is studied primarily directed to this low temperature and less sunshine weather.The present invention uses the NAA and KCL of proper ratio
Compounded, use in the Grain Filling of Rice middle and later periods, although the generation of rice assimilation quotient can not be increased substantially, can prevent
Kernel grouting key enzyme activity declines, and can promote kernel grouting, and promotes stem sheath assimilation quotient to be transported to fringe portion seed, improves assimilation
The transformation efficiency of thing, the assimilation quotient of abundance is provided for the synthesis of seed starch, can effectively mitigate low temperature and less sunshine to rice yield and
The injury of rice matter production.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, specific embodiment will be used below
It is described in detail, but the present invention is limited to absolutely not these examples.As described below is only the present invention preferably embodiment.
Observed according to inventor, large spike rice plant is tall and big, and early growth is very fast, has been accumulated in Rice Heading florescence
Substantial amounts of assimilation quotient.Therefore, the later stage runs into low temperature and less sunshine weather, and photosynthesis stops, and assimilation quotient product is unable under production,
The assimilation quotient accumulated in rice stem sheath is equally alternatively Grain Filling of Rice and growth is utilized, but efficiency comparison is low.For this
One phenomenon, inventor think can solve this problem to a certain extent by external source regulation and control, you can with same by improving rice
The angle of the transport efficacy of compound, slow down injury of the low temperature and less sunshine to rice yield and quality responses.
The plant growth regulator of the present invention, the binary built preparation formed using NAA and KCL as active ingredient, they it
Between combination there is obvious Synergistic to improving the running efficiency of rice rice assimilation quotient and then improving rice yield and quality
Effect, rather than just the simple superposition of two kinds of medicaments.Table 1 provides the embodiment of different ratio.
The compositing formula of the embodiment of table 1 and comparative example
Active ingredient in above-described embodiment 9,10,11,12 is NAA and KCL, after first being mixed in corresponding ratio, then is sprayed；
Comparative example 1 and embodiment 1-8 are directly sprayed.Specifically spraying method is：Under the conditions of low temperature and less sunshine, rice is handled, such as
It is material with the super rice varieties river in Zhejiang Province excellent 12 of big fringe, 20-30d is sprayed after Rice Flowering, every mu of 30-35L.That is NAA spraying concentrations
Respectively 0,0.186,1.86,9.31 and 18.6mg/L；KCL spraying concentration is 1,2,4 and 8g/L；It is dense with the NAA of KCL compoundings
Spend for 1.86mg/L.Later stage obtains the corresponding experimental data in table 2-4 through measurement.
Influence of the different component of table 2 processing to Rice Panicle amount of dry matter proportion, yield and yield forming
As shown in Table 2, either NAA or potassium chloride, rice assimilation quotient Transport Rate (fringe dry can be improved by individually spraying
Quality proportion) and yield, wherein with 1.86mg/LNAA and 4g/L KCL highests, but increased Amplitude Ratio is relatively limited, 1.86mg/
L processing yield only increases by 3.07%, 4g/L KCL as 5.00%.Correspondingly, its fringe amount of dry matter proportion also highest, but only
1-2 percentage points.It can also be seen that NAA and KCL the compounding effect of increasing production of suitable concn are more obvious from table 2, and clear water phase
Than the amount of increase in production of 1.86mg/LNAA and 2g/L and 4g/L KCL complex treatments respectively reaches 6.02% and 10.57%.In addition,
Fringe amount of dry matter proportion also respectively reaches 55.21% and 56.25%, higher than the 52.61% of control.
The different disposal of table 3 is strong to rice, in and Inferior grain setting percentage and mass of 1000 kernel influence
The production-increasing function of NAA and KCL compoundings mainly functions relevant in Inferior grain and middle seed.As shown in Table 3,
The Inferior grain setting percentage of 4g/L KCl+1.86mg/LNAA processing and mass of 1000 kernel compare obviously higher than clear water, and amplification is respectively
24.92% and 7.34%.In terms of setting percentage, 4g/L KCl+1.86mg/LNAA processing influences not on Superiors grains and middle seed
Greatly, although increased, amplification is smaller；In grain double recipe face, the amplification of 4g/L KCl+1.86mg/LNAA processing also reaches
6.50%.
Influence of the different disposal of table 4 to rice leaf, stem sheath and fringe unstructuredness carbon compound content and its ratio
Under the conditions of low temperature and less sunshine, Rice Photosynthesis has substantially stopped, therefore sprays 4g/L KCl+1.86mg/LNAA tune
Section agent can not increase considerably rice assimilation quotient.Shown in table 4, the total carbohydrates of 4g/L KCl+1.86mg/LNAA processing
Content slightly higher than compares, amplification 3.18%.In addition, the ratio shared by blade unstructuredness carbon compound content is poor between handling
It is different also little, but the stem sheath unstructuredness carbon compound content of 4g/L KCl+1.86mg/LNAA processing is decreased obviously, correspondingly
Its ratio is also reduced, lower 6 percentage points than compareing.However, the fringe unstructuredness carbon of 4g/L KCl+1.86mg/LNAA processing
For hydrate content than control increase by 13.96%, its ratio increases to 75.5% from 68.3% (clear water processing).
It can be seen that in being analyzed more than, NAA and KCL compoundings can mitigate low temperature and less sunshine weather in a way to rice yield
And the injury of breed formation, and its action pathway improves the profit of assimilation quotient mainly by improving rice assimilation quotient transport efficacy
With efficiency, so as to improve rice plant to low temperature and the few adaptability according to weather.
It is above-mentioned only to there is provided the example sprayed during applying after the mixing of NAA and KCL compoundings, according to the experiment knot of the present invention
Fruit, those skilled in the art combine existing conventional techniques means, can readily known, above-mentioned plant growth regulating of the invention
In agent, in addition to active ingredient NAA and KCL, receptible auxiliary agent composition in plant growth regulator can also be included, such as may be used
Including not producing chemical action with NAA and KCL or the component adversely affected will not be played to the drug effect of the present invention, make as conventional
Dispersant, defoamer, excipient etc..According to different use demands, plant growth regulator of the invention can be made into
Corresponding aqua, suspending agent, wettable powder etc. are adapted to the formulation agriculturally used.The above-mentioned plant growth regulating of the present invention
Agent, corresponding preparations product can be made by above-mentioned weight proportion or concentration；When can also apply：By above-mentioned active ingredient again by upper
Apply, be administered simultaneously or apply successively after stating weight proportion mixing.It is above-mentioned to should be included within the scope of the present invention.
Claims (10)
1. it is a kind of improve rice assimilation quotient transport efficacy plant growth regulator, it is characterised in that active ingredient be NAA and
KCL, both weight proportions are NAA：KCL=1.86:1800-4500.
2. the plant growth regulator according to claim 1 for improving rice assimilation quotient transport efficacy, it is characterised in that two
Person's weight proportion is NAA：KCL=1.86:2000-4200.
3. the plant growth regulator according to claim 1 for improving rice assimilation quotient transport efficacy, it is characterised in that two
Person's weight proportion is NAA：KCL=1.86:4000.
4. the plant growth regulator of the raising rice assimilation quotient transport efficacy according to claim any one of 1-3, it is special
Sign is, also contains auxiliary addition agent in the plant growth regulator, so that the formulation for being adapted to agriculturally use is made.
5. the plant growth regulator according to claim 1 for improving rice assimilation quotient transport efficacy, it is characterised in that institute
It is aqua to state plant growth regulator, and wherein NAA concentration is 1.86mg/L, and KCL concentration is 1.8g/L-4.5g/L.
6. the plant growth regulator according to claim 5 for improving rice assimilation quotient transport efficacy, it is characterised in that institute
It is 1.86mg/L to state NAA concentration, and the KCL concentration is 2g/L-4.2g/L.
7. the plant growth regulator according to claim 6 for improving rice assimilation quotient transport efficacy, it is characterised in that
NAA concentration is 1.86mg/L, and the KCL concentration is 4g/L.
8. the application of the plant growth regulator described in a kind of any one of claim 1-7, it is characterised in that in low temperature and less sunshine day
Under gas, 20-30d is sprayed to improve rice assimilation quotient transport efficacy after Rice Flowering.
9. the application of plant growth regulator according to claim 8, it is characterised in that the NAA and KCL are re-dubbed plant
After thing growth regulator, NAA spraying concentration is 1.86mg/L, and KCL spraying concentration is 1.8g/L-4.5g/L, every mu of dosage
For 30-35L.
10. the application of plant growth regulator according to claim 9, it is characterised in that the spraying concentration of the NAA is
1.86mg/L, the KCL spraying concentration are 4g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711072979.3A CN107691472B (en) | 2017-11-03 | 2017-11-03 | It is a kind of improve rice assimilation quotient transfer efficiency plant growth regulator and its application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711072979.3A CN107691472B (en) | 2017-11-03 | 2017-11-03 | It is a kind of improve rice assimilation quotient transfer efficiency plant growth regulator and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900775A (en) * | 2019-03-22 | 2019-06-18 | 山东省农业科学院作物研究所 | A kind of method of in situ quantitation non-destructive testing wheat Ear photosynthesis contribution rate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665383B (en) * | 2009-09-27 | 2012-11-07 | 湖南农业大学 | Fertilizer for coating paddy seeds |
| CN106922469A (en) * | 2017-03-10 | 2017-07-07 | 保山市美景园艺有限责任公司 | A kind of drought resisting planting method of nursery stock |
-
2017
- 2017-11-03 CN CN201711072979.3A patent/CN107691472B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665383B (en) * | 2009-09-27 | 2012-11-07 | 湖南农业大学 | Fertilizer for coating paddy seeds |
| CN106922469A (en) * | 2017-03-10 | 2017-07-07 | 保山市美景园艺有限责任公司 | A kind of drought resisting planting method of nursery stock |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900775A (en) * | 2019-03-22 | 2019-06-18 | 山东省农业科学院作物研究所 | A kind of method of in situ quantitation non-destructive testing wheat Ear photosynthesis contribution rate |
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